CN109529780A - A kind of magnetic porous adsorbent and preparation method thereof - Google Patents
A kind of magnetic porous adsorbent and preparation method thereof Download PDFInfo
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- CN109529780A CN109529780A CN201811378475.9A CN201811378475A CN109529780A CN 109529780 A CN109529780 A CN 109529780A CN 201811378475 A CN201811378475 A CN 201811378475A CN 109529780 A CN109529780 A CN 109529780A
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28009—Magnetic properties
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/46—Materials comprising a mixture of inorganic and organic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
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Abstract
The invention discloses a kind of magnetic porous polymeric sorbents and preparation method thereof, it is using melamine resin, cetyl trimethylammonium bromide, chitosan and ferroso-ferric oxide as primary raw material, first by melamine resin, cetyl trimethylammonium bromide and ferroso-ferric oxide, cross-linking reaction prepares magnetic function compound in acid condition, then chitosan is added thereto and crosslinking agent carries out deep-crosslinked and reacts to form cross-linked porous compound, then the magnetic porous adsorbent of chitin modified melamine resin is made through drying, alcohol reflux.The adsorbent has good adsorption effect, 99% can reach to the removal rate of new coccine dyestuff in waste water, and have the function of simple, efficiently Magneto separate, be conducive to simplify common time-consuming, energy consumption centrifugation, infall process in water treatment procedure, have a good application prospect in sewage treatment field.
Description
Technical field
The invention belongs to technical field of composite materials, and in particular to magnetic porous attached dose a kind of and preparation method thereof.
Background technique
With the rapid development of modern industry, a large amount of discharges of industrial wastewater, sanitary wastewater cause water pollution, seriously
Affect people's health life.Therefore, water body treating and water environment protection become one of the hot issue of today's society.Research
Economic and efficient method for treating water is current governmental and common people's focus of attention.Wastewater processing technology mainly has photocatalysis at present
The technologies such as oxidation, chemical coagulation, biological adsorption, wherein biological adsorption is a kind of simple, effective and economic method, is had wide
Application prospect.
Adsorbent is the key core of biological adsorption, and current adsorbent mainly has porous carbon, diatomite, concave convex rod, conjunction
At organic polymer, agricultural wastes etc..But these adsorbents are there are still at high cost, preparation process is complicated, and separation is not when application
The deficiencies of convenient, or even the meeting that has generates secondary pollution.In contrast, natural polymer base adsorbent has good biofacies
Capacitive and modifiability, to receive significant attention.
In natural polymer base adsorbent, chitosan is constantly subjected to the favor of people.Divide on chitosan molecule chain backbone
Cloth a large amount of NH2Base, OH base isopolarity group and ionic bond, hydrogen bond etc., have good charging neutrality and suction to gel in water
Attached bridging action, and chitosan is nontoxic, there is good degradability.In terms of water process, melamine resin and chitosan have well
Complementation.The former macromolecular chain is rigidly strong, extensive as adsorbent environment adaptability, and the latter has flexibility, the two knot
Conjunction can produce complementary and synergistic effect, to enhance its absorption property to pollutant.
The present invention prepares a kind of magnetic using ferroso-ferric oxide, cetyl trimethylammonium bromide, melamine resin and chitosan
Property porous polymer adsorbent with efficient absorption property, easy Magneto separate performance both overcome melamine resin absorption
The slow disadvantage of dynamics, and overcome that chitosan acid, adsorption effect is poor under alkaline condition, the disadvantage that dosage is big, at high cost.
Summary of the invention
It is an object of the invention in view of the shortcomings of the prior art, provide a kind of magnetic porous adsorbent and preparation method thereof,
The adsorbent has efficient adsorption effect to acid dyes such as new coccines in waste water, and removal rate is up to 99% or more, in dirt
Water treatment field has a good application prospect.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of magnetic porous adsorbent is with melamine resin, cetyl trimethylammonium bromide, chitosan and ferroso-ferric oxide
For primary raw material, first by melamine resin, cetyl trimethylammonium bromide, ferroso-ferric oxide, reaction prepares magnetic in acid condition
Sexual function compound, is then added chitosan thereto, adds ammonium hydroxide after mixing and crosslinking agent progress deep-crosslinked is anti-
It answers, forms cross-linked porous compound, after finally that gained cross-linked porous compound is dry, dehydrated alcohol reflux, the magnetic is made
Property porous adsorbent.
The specific preparation method of the magnetic porous adsorbent includes the following steps:
(1) 1.0-10.0 g melamine resin, 5.0-100.0 g cetyl trimethylammonium bromide and 0.2-9.0 g tetra- are aoxidized
Three-iron disperses in deionized water, 0-2.0 mL formic acid to be added after mixing, and 40-80 DEG C of reaction 10-120 min is made and contains
The mixed solution of magnetic composite；
(2) 60.0 mL are added into the mixed solution containing magnetic composite obtained by step (1) and contain 0.1-10.0 g chitosan
1wt% hydrochloric acid solution is uniformly mixed；
(3) 2.0-32.0 mL ammonium hydroxide, the 1.0-20.0 mL crosslinking agent (crosslinking are added into the mixture that step (2) obtains
Agent is the mixing of one or both of formaldehyde, epoxychloropropane), reaction is terminated after 40-90 DEG C of cross-linking reaction 0.5-6h, is generated and is handed over
Join porous compound；
(4) after the pH to neutrality of regulating step (3) acquired solution, product is separated with magnetic field, after being cleaned repeatedly with deionized water
It is dry, then extra cetyl trimethylammonium bromide is removed with dehydrated alcohol reflux to get the magnetic porous adsorbent is arrived.
Fig. 1 is the TEM figure of prepared magnetic porous adsorbent.It can be seen from the figure that present invention gained adsorbent is table
Face is coarse, the uneven porous structure for having fold concurrently, and is coated with ferriferrous oxide nano-particle, and between each strand
It is cross-linked to form network structure, this structure can provide very big specific surface and activated adoption site, to make it have height
The adsorption capacity of effect.
Fig. 2 is the adsorption effect figure of the prepared magnetic porous adsorbent to new coccine.From figure 2 it can be seen that the suction
Attached dose feeds intake when increasing to 40 mg, to 100 mg/L(50 mL) removal rate of new coccine reaches 99% or more, illustrate the absorption
Agent has good Adsorption effect to new coccine dyestuff.
Remarkable advantage of the invention is:
(1) present invention is made by primary raw material of melamine resin, cetyl trimethylammonium bromide, chitosan and ferroso-ferric oxide
The magnetic porous adsorbent.This method process is easy, low energy consumption, wherein using cetyl trimethylammonium bromide as pore-foaming agent,
Adsorbent specific surface obtained is high, adsorption capacity is strong, ambient adaptability is wide.
(2) adsorbent produced by the present invention has efficient adsorption capacity to acid dyes such as new coccines, and removal rate reaches
To 99% or more, and have the function of simple, efficiently Magneto separate, is conducive to simplify common time-consuming, energy consumption in water treatment procedure
Centrifugation, infall process, have a good application prospect in sewage treatment field.
Detailed description of the invention
Fig. 1 is the TEM figure of magnetic porous adsorbent prepared by the present invention；
Fig. 2 is magnetic porous adsorbent prepared by the present invention to the adsorption effect figure of new coccine.
Specific embodiment
In order to make content of the present invention easily facilitate understanding, With reference to embodiment to of the present invention
Technical solution is described further, but the present invention is not limited only to this.
Embodiment 1:
(1) 1.0 g melamine resins, 5.0 g cetyl trimethylammonium bromides and 1.0 g ferroso-ferric oxides are dispersed in deionization
In water, 0.1 mL formic acid is added after mixing, the mixed solution containing magnetic composite is made in 40 DEG C of 10 min of reaction；
(2) 1wt% that 60.0 mL contain 0.5 g chitosan is added into the mixed solution containing magnetic composite obtained by step (1)
Hydrochloric acid solution is uniformly mixed；
(3) 2.0 mL ammonium hydroxide, 2.0 mL formaldehyde, end after 40 DEG C of cross-linking reaction 0.5h are added into the mixture that step (2) obtains
It only reacts, generates cross-linked porous compound；
(4) product is separated with magnetic field, is done after being cleaned repeatedly with deionized water to neutrality by the pH of regulating step (3) acquired solution
It is dry, then extra cetyl trimethylammonium bromide is removed with dehydrated alcohol reflux to get magnetic porous adsorbent is arrived.
50 mL, 100 mg/L new coccine dye solution in be added 40 mg adsorbents, 3.5 h of adsorption reaction is surveyed
Determine absorbance, detects adsorption effect.Its removal rate is 68.2%.
Embodiment 2:
(1) by 3.0 g melamine resins, 25.0 g cetyl trimethylammonium bromides and 2.5 g ferroso-ferric oxides be dispersed in from
In sub- water, 0.8 mL formic acid is added after mixing, the mixed solution containing magnetic composite is made in 60 DEG C of 40 min of reaction；
(2) 1wt% that 60.0 mL contain 3.0 g chitosans is added into the mixed solution containing magnetic composite obtained by step (1)
Hydrochloric acid solution is uniformly mixed；
(3) 10.0 mL ammonium hydroxide, 1.0 mL epoxychloropropane, 60 DEG C of cross-linking reactions are added into the mixture that step (2) obtains
Reaction is terminated after 1.0h, generates cross-linked porous compound；
(4) product is separated with magnetic field, is done after being cleaned repeatedly with deionized water to neutrality by the pH of regulating step (3) acquired solution
It is dry, then extra cetyl trimethylammonium bromide is removed with dehydrated alcohol reflux to get magnetic porous adsorbent is arrived.
50 mL, 100 mg/L new coccine dye solution in be added 40 mg adsorbents, 3.5 h of adsorption reaction is surveyed
Determine absorbance, detects adsorption effect.Its removal rate is 83.1%.
Embodiment 3:
(1) by 1.0 g melamine resins, 40.0 g cetyl trimethylammonium bromides and 4.0 g ferroso-ferric oxides be dispersed in from
In sub- water, 1.5 mL formic acid are added after mixing, the mixed solution containing magnetic composite is made in 70 DEG C of 90 min of reaction；
(2) 1wt% that 60.0 mL contain 5.0 g chitosans is added into the mixed solution containing magnetic composite obtained by step (1)
Hydrochloric acid solution is uniformly mixed；
(3) it is added 25.0 mL ammonium hydroxide, 3.0 mL formaldehyde and 5.0 mL epoxychloropropane into the mixture that step (2) obtains, 80
Reaction is terminated after DEG C cross-linking reaction 3.0h, generates cross-linked porous compound；
(4) product is separated with magnetic field, is done after being cleaned repeatedly with deionized water to neutrality by the pH of regulating step (3) acquired solution
It is dry, then extra cetyl trimethylammonium bromide is removed with dehydrated alcohol reflux to get magnetic porous adsorbent is arrived.
50 mL, 100 mg/L new coccine dye solution in be added 40 mg adsorbents, 3.5 h of adsorption reaction is surveyed
Determine absorbance, detects adsorption effect.Its removal rate is 96.3%.
Embodiment 4:
(1) by 8.0 g melamine resins, 80.0 g cetyl trimethylammonium bromides and 7.0 g ferroso-ferric oxides be dispersed in from
In sub- water, 1.8 mL formic acid are added after mixing, the mixed solution containing magnetic composite is made in 80 DEG C of 100 min of reaction；
(2) 1wt% that 60.0 mL contain 8.0 g chitosans is added into the mixed solution containing magnetic composite obtained by step (1)
Hydrochloric acid solution is uniformly mixed；
(3) it is added 24.0 mL ammonium hydroxide, 8.0 mL formaldehyde and 2.0 mL epoxychloropropane into the mixture that step (2) obtains, 50
Reaction is terminated after DEG C cross-linking reaction 3.5h, generates cross-linked porous compound；
(4) product is separated with magnetic field, is done after being cleaned repeatedly with deionized water to neutrality by the pH of regulating step (3) acquired solution
It is dry, then extra cetyl trimethylammonium bromide is removed with dehydrated alcohol reflux to get magnetic porous adsorbent is arrived.
50 mL, 100 mg/L new coccine dye solution in be added 40 mg adsorbents, 3.5 h of adsorption reaction is surveyed
Determine absorbance, detects adsorption effect.Its removal rate is 99.2%.
Embodiment 5:
(1) 10.0 g melamine resins, 100.0 g cetyl trimethylammonium bromides and 9.0 g ferroso-ferric oxides are dispersed in
In ionized water, 2.0 mL formic acid are added after mixing, the mixed solution containing magnetic composite is made in 80 DEG C of 120 min of reaction；
(2) 1wt% that 60.0 mL contain 10.0 g chitosans is added into the mixed solution containing magnetic composite obtained by step (1)
Hydrochloric acid solution is uniformly mixed；
(3) 32.0 mL ammonium hydroxide, 10.0 mL formaldehyde and 10.0 mL epoxychloropropane are added into the mixture that step (2) obtains,
Reaction is terminated after 90 DEG C of cross-linking reaction 6.0h, generates cross-linked porous compound；
(4) product is separated with magnetic field, is done after being cleaned repeatedly with deionized water to neutrality by the pH of regulating step (3) acquired solution
It is dry, then extra cetyl trimethylammonium bromide is removed with dehydrated alcohol reflux to get magnetic porous adsorbent is arrived.
50 mL, 100 mg/L new coccine dye solution in be added 40 mg adsorbents, 3.5 h of adsorption reaction is surveyed
Determine absorbance, detects adsorption effect.Its removal rate is 87.8%.
The foregoing is merely presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, is all covered by the present invention.
Claims (4)
1. a kind of magnetic porous adsorbent, it is characterised in that: the adsorbent is with melamine resin, cetyl trimethyl bromination
Ammonium, chitosan and ferroso-ferric oxide are prepared for primary raw material.
2. a kind of method for preparing magnetic porous adsorbent as described in claim 1, it is characterised in that: first by melamine resin,
Reaction prepares magnetic composite in acid condition for cetyl trimethylammonium bromide and ferroso-ferric oxide, is then added thereto
Chitosan, is added ammonium hydroxide after mixing and crosslinking agent carries out deep-crosslinked and is modified, and cross-linked porous compound is formed, finally by institute
After obtaining the drying of cross-linked porous compound, dehydrated alcohol reflux, the magnetic porous adsorbent is made.
3. the preparation method of magnetic porous adsorbent according to claim 2, it is characterised in that: specific step is as follows:
(1) 1.0-10.0 g melamine resin, 5.0-100.0 g cetyl trimethylammonium bromide and 0.2-9.0 g tetra- are aoxidized
Three-iron disperses in deionized water, 0-2.0 mL formic acid to be added after mixing, and 40-80 DEG C of reaction 10-120 min is made and contains
The mixed solution of magnetic composite；
(2) 60.0 mL are added into the mixed solution containing magnetic composite obtained by step (1) and contain 0.1-10.0 g chitosan
1wt% hydrochloric acid solution is uniformly mixed；
(3) 2.0-32.0 mL ammonium hydroxide, 1.0-20.0 mL crosslinking agent, 40-90 DEG C of friendship are added into the mixture that step (2) obtains
Reaction is terminated after connection reaction 0.5-6h, generates cross-linked porous compound；
(4) after the pH to neutrality of regulating step (3) acquired solution, product is separated with magnetic field, after being cleaned repeatedly with deionized water
It is dry, then extra cetyl trimethylammonium bromide is removed with dehydrated alcohol reflux to get the magnetic porous adsorbent.
4. the preparation method of magnetic porous adsorbent according to claim 2 or 3, it is characterised in that: the crosslinking agent is
The mixing of one or both of formaldehyde, epoxychloropropane.
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Cited By (5)
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| CN110115988A (en) * | 2019-06-03 | 2019-08-13 | 湖南泰谷生态工程有限公司 | A kind of processing method of heavy metal ion type industrial wastewater |
| CN111111631A (en) * | 2020-01-08 | 2020-05-08 | 重庆大学 | Preparation method of chitosan-based magnetic microsphere adsorbent capable of efficiently adsorbing cationic dye |
| CN112791706A (en) * | 2021-02-08 | 2021-05-14 | 福州大学 | Magnetic adsorbent and preparation method thereof |
| CN113786822A (en) * | 2021-11-16 | 2021-12-14 | 因达孚先进材料(苏州)有限公司 | Preparation method of active carbon fiber loaded magnetic resin microsphere porous material |
| CN116002933A (en) * | 2023-03-24 | 2023-04-25 | 成都之和环保科技有限公司 | Preparation method of pure water |
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| CN108404889A (en) * | 2018-05-04 | 2018-08-17 | 西安鸿钧睿泽新材料科技有限公司 | A kind of preparation method of the carbon dioxide absorber of chitosan skeleton |
| CN106622178B (en) * | 2017-01-25 | 2019-06-07 | 福州大学 | A kind of attached dose of magnetic porous cation high molecular and preparation method thereof |
| US10662261B2 (en) * | 2010-06-01 | 2020-05-26 | Ge Healthcare Bioprocess R&D Ab | Chelator and use thereof |
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| US10662261B2 (en) * | 2010-06-01 | 2020-05-26 | Ge Healthcare Bioprocess R&D Ab | Chelator and use thereof |
| CN106622178B (en) * | 2017-01-25 | 2019-06-07 | 福州大学 | A kind of attached dose of magnetic porous cation high molecular and preparation method thereof |
| CN108404889A (en) * | 2018-05-04 | 2018-08-17 | 西安鸿钧睿泽新材料科技有限公司 | A kind of preparation method of the carbon dioxide absorber of chitosan skeleton |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110115988A (en) * | 2019-06-03 | 2019-08-13 | 湖南泰谷生态工程有限公司 | A kind of processing method of heavy metal ion type industrial wastewater |
| CN110115988B (en) * | 2019-06-03 | 2022-01-21 | 湖南泰谷生态工程有限公司 | Treatment method of heavy metal ion type industrial wastewater |
| CN111111631A (en) * | 2020-01-08 | 2020-05-08 | 重庆大学 | Preparation method of chitosan-based magnetic microsphere adsorbent capable of efficiently adsorbing cationic dye |
| CN112791706A (en) * | 2021-02-08 | 2021-05-14 | 福州大学 | Magnetic adsorbent and preparation method thereof |
| CN112791706B (en) * | 2021-02-08 | 2022-03-11 | 福州大学 | Magnetic adsorbent and preparation method thereof |
| CN113786822A (en) * | 2021-11-16 | 2021-12-14 | 因达孚先进材料(苏州)有限公司 | Preparation method of active carbon fiber loaded magnetic resin microsphere porous material |
| CN113786822B (en) * | 2021-11-16 | 2022-02-22 | 因达孚先进材料(苏州)有限公司 | Preparation method of active carbon fiber loaded magnetic resin microsphere porous material |
| CN116002933A (en) * | 2023-03-24 | 2023-04-25 | 成都之和环保科技有限公司 | Preparation method of pure water |
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